When a file is selected with an 'O' in the Sel column in the Add files to list screen the OAM and/or I/O module will be exported.
The OAM and/or I/O module will be added to the export lists making the Comp From will be O and Data Also N. The export will not export the physical or the logical file but will export the OAM and/or I/O module with the definition of the file and the trigger program for the file if DB triggers are enabled.
To remove this module, put O in the Sel file of the export list screen and it will be dropped from the Export list.